REPLACEMENT PROCEDURES 22 Manual 0-2683
B. Model C:
NOTE
Type C switch with 6 prongs replaces Type C switch
with 4 prongs.
1. Remove cover/handle from unit per subsection 4.2.
2. Disconnect wires to ON/OFF Switch.
3. Push plastic clips down on top end of Switch and
slide Switch out through front panel.
4. Check the numbering sequence of the connectors
on the ON/OFF Switch and install the switch as
follows:
a. 1,2,4,5 - Install switch with connectors posi-
tioned towards the bottom of unit.
b. 11,12,24,25 - Install switch with connectors
positioned towards the top of the unit.
c. 1A, 2A, 4B, 5B - Install switch with these con-
nectors positioned towards the top of the unit.
5. To connect the input wiring to the ON/OFF Switch
refer to subsection 4.17, step 6.
6. Install cover/handle by reversing step 1, keeping
in mind the following:
NOTE
Before replacing cover, make sure all wires are care-
fully positioned to avoid pinching when the cover
and handle are secured.
4.10 Fan Replacement
1. Remove cover/handle from unit per subsection
4.2.
2. Carefully slide the Air Compressor out of the Trans-
former bracket and out of the way of the Fan. Be
careful not to strain wire connections. (If neces-
sary, remove Compressor completely, following
procedures described in subsection 4.5.)
3. For reference, mark wires with correct connection
designation, then disconnect two wires to Fan.
4. Remove two (2) rivets* securing Fan to the front
panel.
NOTE
*Some models may use screws instead of rivets.
5. Install replacement Fan. Refer to Figure 5.1 for
proper Fan orientation (or refer to the arrows
marked on the Fan chassis).
NOTE
Proper fan orientation is essential to ensure proper
cooling of power supply parts.
6. Install Compressor by reversing steps 1-3, keeping
in mind the following:
a. Position wire connector L4 so that it runs along
side the Transformer, NOT across the top of the
Transformer or touching any metal parts.
b. The Compressor is secured in position by one
of the handle screws.
4.11 Diode Bridge Rectifier
Replacement
NOTE
Refer to subsection 4.1, General Information, for
information about wire harnesses.
1. Remove cover/handle from unit per subsection 4.2.
2. Note all wire connections and locations to the Di-
ode Bridge Rectifier.
3. Disconnect wires to the Diode(s), and remove Di-
ode from unit.
4. Install replacement Diode, by reversing steps 1-3
above, noting the following:
a. Diode should be oriented with plus sign (+)
down and to the right.